In context of overlay "Oberflächen" – Treppe – way/1163613835 via StreetComplete 63.2:

Treppe geht bis zu Straße

Unable to answer "What kind of building is this?" for way/1207226077 via StreetComplete 54.0:

Sewage treatment plant/ Kläranlage

In context of overlay "Surfaces" – on bridge: Path – way/45676362 via StreetComplete 61.3:

Brücke defekt

Attached photo(s):
https://streetcomplete.app/p/311541.jpg

Unable to answer "Who is allowed to park here? Parking may be free or paid." for node/9945370141 via StreetComplete 54.1:

Für Fahrräder

Hier kein Gebäude

via StreetComplete 58.0

Attached photo(s):
https://westnordost.de/p/220008.jpg

In context of overlay "Buildings" – Esso (Gas Station) – way/435380113 via StreetComplete 57.1:

Tankstelle

Toilette für Rollstuhlfahrer

via StreetComplete 56.0

Attached photo(s):
https://westnordost.de/p/199858.jpg

Unable to answer "What kind of crossing is this?" for node/3065959396 via StreetComplete 55.0:

Fahrrad

Unable to answer "Who is allowed to park here? Parking may be free or paid." for way/554592349 via StreetComplete 54.1:

Kunden- und Privatparkplätze